Railway Bogie Inner Spring From Kingrail

Kingrail railway bogie inner springs are precision-manufactured coil springs used inside the outer spring of railway suspension systems. As part of the combined spring assembly, the inner spring helps share vertical loads, improve suspension stability, and increase the overall reliability of the bogie system.

The inner spring plays an important role in absorbing vibration and impact generated during railway operation. It helps reduce stress on the bogie frame, axle box, wheelset, and other connected components, improving running safety and passenger comfort while extending the service life of the vehicle suspension system.

Kingrail can produce railway inner springs based on customer drawings, technical parameters, or samples. Available materials include 60Si2CrVA, SUP9A, SUP10, 50CrV4, and other equivalent spring steel materials. Each spring can be processed with proper heat treatment, surface finishing, and anti-corrosion protection according to customer requirements.

Product Advantages:

• High elastic performance and stable load response
• Excellent resistance to fatigue and deformation
• Accurate dimensions for reliable assembly
• Suitable for use with matching outer springs
• Customizable material, size, load capacity, and coating
• Reliable performance for railway rolling stock applications

Inspection Items:

• Raw material verification
• Free height and outer diameter inspection
• Wire diameter inspection
• Load-deflection test
• Hardness test
• Surface crack and defect inspection
• Packaging inspection before delivery

Applications:

• Railway bogie spring groups
• Locomotive suspension systems
• Freight wagon suspension
• Passenger coach suspension
• Metro and urban rail vehicles

Kingrail inner springs are suitable for both new rolling stock production and railway maintenance replacement projects.

Welcome to the Kingrail website. We're glad you stopped by and trust you will have a happy tour.

Kingrail is an international company offers diversified range of high-tech products and services and operates globally.

Core business is identified with three divisions:

1. High-end railway components – wheels, axles and wheelsets for high-speed applications, locomotives, passenger trains, trams and underground trains., rail road cars, light rail, street car, ballast vehicles, etc

2. Railway track materials: Tie plates, fishplates, clips, screw spikes, steel rails, etc

3. Forging and casting to drawings, for various applications such as power generation, oil and gas, offshore platforms, cement works, industrial plants, iron and steel production plants or shipbuilding.

Whether you need components or integrated systems, global tracking technology or performance analytics,Kingrail is always here at service for you!

Since 2002, we've been committed to having the world's highest standards in railroad wheel sets. But we don't set the standards; our customers do.

The hard and smart-working employees of Kingrail are dedicated to putting customers first. Over 200,000 squares of manufacturing space. We're armed with modern equipment, progressive production methods, and the confidence that comes with years of experience. We can take on any job. No matter what it is.

With roots deeply embedded in the railroad industry, we've grown to be a world-class supplier of customer satisfaction. From your first contact with us to the delivery of the product, we strive to make it easy for you. Kingrail staff are happy and pride working here because they love and happy for the job, care and happy for all the job they do.

So feel free to put us to the test – with something easy, or better yet, with something impossible. We're ready to show you what we can do.

Maanshan Kingrail Technology Co.,Ltd. is pleased to introduce ourselves as one of the leading manufacturer, stockist and supplies of Railcar spares and Railway Track Materials, Railway equipment, forging and casting metal products!

Equipped with forging lines:3T electro-hydraulic Hammer,2500T Hot Die press,1600T Hot Die press,400T Double plate Friction press,300T Double plate Friction press, Kingrail also equipped with fully machining and inspection equipment, Main machining equipments:CNC Lathes,Painting line,Continuous Heat-treatment Line,well type Furnace,Cutting machine,Robots, Main testing equipments;OES Metals Analyzer,CMM,Universal hydrankic testing machine.

Invest about 8% of the sales volume to be the R&D expenses, Kingrail introduce the world's leading technology combined with international high-tech talent to ensure the stable development of the company,and maintain long-term competitive advantage.

Kingrail have exported products over 50 countries such as US, Canda, UK, South Africa, Kenya, India, etc. Competitve quality and service are spoken highly by worldwide customers!

Kingrail made strict rules on all products, customer service is customer core value! 

Our vision:

* To be best supplier with world-Leading Capacities!

* 100% customer satisfication!

We are not the best now, but we strive to be better and better!